为Firebase存储创建新的唯一路径,并将其存储在数据库中? [英] Creating a new unique path to Firebase Storage, coupled with storing it in the database?
问题描述
itemImages / itemUID / image1.jpg
。问题是获得 itemUID
,这是在一个项目被添加到数据库后自动生成的。 我有添加项目到数据库的代码片段:
itemsRef.push({
title:title,
描述:描述,
标签:tags,
价格:price,
});
以下是我用来存储图片的简化函数:
var uploadTask = imageNewItemRef.child('fakeUID'+'/'+ imageNames [x])。putString(images [x],'base64');
$ b uploadTask.on('state_changed',function(snapshot){
},function(error){
console.log(error uploadloading image) ;
},function(){
var downloadURL = uploadTask.snapshot.downloadURL;
console.log(downloadURL);
});
正如你所看到的,我使用了一个硬编码的 fakeUID
链接为测试目的,但我没有线索(和搜索没有帮助),如何有一个 uniqueUID
而不是假的,这是链接到该项目:/ $ / $>
任何帮助表示赞赏!
道歉书写不好(和未经测试的)JS,但会像这样的工作?
//创建一个新的推送ID和用
var currentItemRef = itemsRef.push({
title:title,
description:description,
tags:tags,
price:price,
})。then(function(){
var storageRef = firebase.storage()。ref();
// currentItemRef.name是DB
中的唯一键返回storageRef.child(currentItemRef.name +'/'+ imageNames [x])。putString(images [x],'base64');
})。then(function(snapshot){
/ /用do来更新数据库wnload URL
return currentItemRef.update({
url:snapshot.metadata.downloadURLs [0]
}); catch(function(error){
console.error(error);
});
I have a marketplace web app, where users can upload items, and of course they can also see images associated with these items. The problem is organizing the storage buckets, I was thinking to make the path itemImages/itemUID/image1.jpg
. The problem is getting the itemUID
, which is automatically generated, after an item is added to the database.
Here's a code snippet I have for adding items to the db:
itemsRef.push({
title: title,
description: description,
tags: tags,
price: price,
});
and here's a simplified function I use to store an image:
var uploadTask = imageNewItemRef.child('fakeUID' + '/' + imageNames[x]).putString(images[x], 'base64');
uploadTask.on('state_changed', function(snapshot) {
}, function(error) {
console.log("error uploading image");
}, function() {
var downloadURL = uploadTask.snapshot.downloadURL;
console.log(downloadURL);
});
as you can see, I'm using a hardcoded fakeUID
link for testing purposes, but I have no clue (and searching hasn't helped), on how to have a uniqueUID
instead of a fake one, that is linked to the item :/
Any help is appreciated!
Apologies for poorly written (and untested) JS, but would something like this work?
// create a new push ID and update the DB with some information
var currentItemRef = itemsRef.push({
title: title,
description: description,
tags: tags,
price: price,
}).then(function() {
var storageRef = firebase.storage().ref();
// currentItemRef.name is the unique key from the DB
return storageRef.child(currentItemRef.name + '/' + imageNames[x]).putString(images[x], 'base64');
}).then(function(snapshot) {
// update the DB with the download URL
return currentItemRef.update({
url: snapshot.metadata.downloadURLs[0]
});
}).catch(function(error) {
console.error(error);
});
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